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Toothed Belts

Metrical pitch AT, T, HTD / Inch pitch L, XL, H, XH, XXH

The synchronous belts ensure quiet, efficient, and slip-free power transmission, thanks to the toothed profile that meshes perfectly with pulleys of the same pitch. 

They are ideal for applications requiring positioning precision, reliability, and long life even in heavy-duty working conditions. They reduce maintenance and improve energy efficiency, making them perfect for machine tools, industrial automation, handling, and any application requiring reliable and precise transmission.

Available in a wide range of versions, they include:

  • Metric T, AT, and HTD synchronous belts for high precision standard applications and high power transmissions.
  • Inch XL, L, H, XH, and XXH synchronous belts, compatible with American standard machinery (imperial pitch).
  • Reinforced options with steel or Kevlar core for superior performance.

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HTD synchronous belt 2240-14M-40, pitch 14M, width 40 mm, length 2240 mm, 160 teeth, closed loop
ATTI • Code 062546 • CF HTD22401440
HTD synchronous belt 2240-14M-40, pitch 14M, width 40 mm, length 2240 mm, 160 teeth, closed loop
List price 247,30 € /pc.
Online 136,01 € /pc.
On Order
(Ship. 6-7 days)
HTD belt 2240-14M-55, pitch 14M, width 55 mm, length 2240 mm, 160 teeth, closed-loop
ATTI • Code 062547 • CF HTD22401455
HTD belt 2240-14M-55, pitch 14M, width 55 mm, length 2240 mm, 160 teeth, closed-loop
List price 340,04 € /pc.
Online 187,02 € /pc.
On Order
(Ship. 6-7 days)
HTD 2248-8M-20 timing belt, pitch 8M, width 20 mm, length 2248 mm, 281 teeth, closed loop
ATTI • Code 062548 • CF HTD22480820
HTD 2248-8M-20 timing belt, pitch 8M, width 20 mm, length 2248 mm, 281 teeth, closed loop
List price 87,57 € /pc.
Online 48,16 € /pc.
On Order
(Ship. 6-7 days)
HTD timing belt 2248-8M-50, pitch 8M, width 50 mm, length 2248 mm, 281 teeth, endless loop
ATTI • Code 062549 • CF HTD22480850
HTD timing belt 2248-8M-50, pitch 8M, width 50 mm, length 2248 mm, 281 teeth, endless loop
List price 218,92 € /pc.
Online 120,41 € /pc.
On Order
(Ship. 6-7 days)
HTD belt 2304-8M-30, pitch 8M, width 30 mm, length 2304 mm, 288 teeth, closed loop
ATTI • Code 062550 • CF HTD23040830
HTD belt 2304-8M-30, pitch 8M, width 30 mm, length 2304 mm, 288 teeth, closed loop
List price 134,65 € /pc.
Online 74,06 € /pc.
On Order
(Ship. 6-7 days)
HTD toothed belt 2380-14M-115, pitch 14M, width 115 mm, length 2380 mm, 170 teeth, endless loop
ATTI • Code 062551 • CF HTD238014115
HTD toothed belt 2380-14M-115, pitch 14M, width 115 mm, length 2380 mm, 170 teeth, endless loop
List price 755,64 € /pc.
Online 415,60 € /pc.
On Order
(Ship. 6-7 days)
HTD belt 2380-14M-55, pitch 14M, width 55 mm, length 2380 mm, 170 teeth, closed loop
ATTI • Code 062552 • CF HTD23801455
HTD belt 2380-14M-55, pitch 14M, width 55 mm, length 2380 mm, 170 teeth, closed loop
List price 361,40 € /pc.
Online 198,77 € /pc.
On Order
(Ship. 6-7 days)
HTD timing belt 2380-14M-85, pitch 14M, width 85 mm, length 2380 mm, 170 teeth, closed loop
ATTI • Code 062553 • CF HTD23801485
HTD timing belt 2380-14M-85, pitch 14M, width 85 mm, length 2380 mm, 170 teeth, closed loop
List price 558,51 € /pc.
Online 307,18 € /pc.
On Order
(Ship. 6-7 days)
HTD 2504-8M-20 toothed belt, pitch 8M, width 20 mm, length 2504 mm, 313 teeth, closed loop
ATTI • Code 062554 • CF HTD25040820
HTD 2504-8M-20 toothed belt, pitch 8M, width 20 mm, length 2504 mm, 313 teeth, closed loop
List price 97,48 € /pc.
Online 53,61 € /pc.
On Order
(Ship. 6-7 days)
HTD toothed belt 2504-8M-30, pitch 8M, width 30 mm, length 2504 mm, 313 teeth, closed loop
ATTI • Code 062555 • CF HTD25040830
HTD toothed belt 2504-8M-30, pitch 8M, width 30 mm, length 2504 mm, 313 teeth, closed loop
List price 146,20 € /pc.
Online 80,41 € /pc.
On Order
(Ship. 6-7 days)
HTD timing belt 2660-14M-115, pitch 14M, width 115 mm, length 2660 mm, 190 teeth, closed loop
ATTI • Code 062556 • CF HTD266014115
HTD timing belt 2660-14M-115, pitch 14M, width 115 mm, length 2660 mm, 190 teeth, closed loop
List price 845,48 € /pc.
Online 465,01 € /pc.
On Order
(Ship. 6-7 days)
HTD toothed belt 2736-8M-30, pitch 8M, width 30 mm, length 2736 mm, 342 teeth, closed loop
ATTI • Code 062557 • CF HTD27360830
HTD toothed belt 2736-8M-30, pitch 8M, width 30 mm, length 2736 mm, 342 teeth, closed loop
List price 159,84 € /pc.
Online 87,91 € /pc.
On Order
(Ship. 6-7 days)
HTD timing belt 3048-8M-20, pitch 8M, width 20 mm, length 3048 mm, 381 teeth, closed loop
ATTI • Code 062558 • CF HTD30488M20
HTD timing belt 3048-8M-20, pitch 8M, width 20 mm, length 3048 mm, 381 teeth, closed loop
List price 118,83 € /pc.
Online 65,36 € /pc.
On Order
(Ship. 6-7 days)
HTD synchronous belt 3048-8M-30, pitch 8M, width 30 mm, length 3048 mm, 381 teeth, closed loop
ATTI • Code 062559 • CF HTD30488M30
HTD synchronous belt 3048-8M-30, pitch 8M, width 30 mm, length 3048 mm, 381 teeth, closed loop
List price 178,24 € /pc.
Online 98,03 € /pc.
On Order
(Ship. 6-7 days)
HTD timing belt 3048-8M-50, pitch 8M, width 50 mm, length 3048 mm, 381 teeth, closed loop
ATTI • Code 062560 • CF HTD30488M50
HTD timing belt 3048-8M-50, pitch 8M, width 50 mm, length 3048 mm, 381 teeth, closed loop
List price 297,09 € /pc.
Online 163,40 € /pc.
On Order
(Ship. 6-7 days)
HTD toothed belt 3048-8M-85, pitch 8M, width 85 mm, length 3048 mm, 381 teeth, closed loop
ATTI • Code 062561 • CF HTD30488M85
HTD toothed belt 3048-8M-85, pitch 8M, width 85 mm, length 3048 mm, 381 teeth, closed loop
List price 505,04 € /pc.
Online 277,77 € /pc.
On Order
(Ship. 6-7 days)
HTD belt 3120-8M-20, pitch 8M, width 20 mm, length 3120 mm, 390 teeth, closed loop
ATTI • Code 062562 • CF HTD31200820
HTD belt 3120-8M-20, pitch 8M, width 20 mm, length 3120 mm, 390 teeth, closed loop
List price 121,52 € /pc.
Online 66,84 € /pc.
On Order
(Ship. 6-7 days)
HTD timing belt 3120-8M-30, pitch 8M, width 30 mm, length 3120 mm, 390 teeth, closed loop
ATTI • Code 062563 • CF HTD31208M30
HTD timing belt 3120-8M-30, pitch 8M, width 30 mm, length 3120 mm, 390 teeth, closed loop
List price 182,28 € /pc.
Online 100,25 € /pc.
On Order
(Ship. 6-7 days)
HTD timing belt 3120-8M-50, pitch 8M, width 50 mm, length 3120 mm, 390 teeth, closed-loop
ATTI • Code 062564 • CF HTD31200850
HTD timing belt 3120-8M-50, pitch 8M, width 50 mm, length 3120 mm, 390 teeth, closed-loop
List price 303,80 € /pc.
Online 167,09 € /pc.
On Order
(Ship. 6-7 days)
HTD timing belt 3200-8M-20, pitch 8M, width 20 mm, length 3200 mm, 400 teeth, closed loop
ATTI • Code 062565 • CF HTD32008M20
HTD timing belt 3200-8M-20, pitch 8M, width 20 mm, length 3200 mm, 400 teeth, closed loop
List price 124,71 € /pc.
Online 68,59 € /pc.
On Order
(Ship. 6-7 days)

Frequently asked questions

How is the code of an HTD timing belt read (e.g., 365-5M-15)?

The code of an HTD timing belt indicates the length, pitch of the teeth, and width of the belt.

Taking 365-5M-15 as an example:

  • 365: belt length in millimeters.
  • 5M: tooth pitch of 5 mm, with HTD profile.
  • 15: belt width in millimeters.

To calculate the number of teeth, simply divide the length by the pitch: 365 ÷ 5 = 73 teeth.

On shop.atti.it, ATTI offers over 4,200 timing belts, in HTD pitches of 3M, 5M, 8M, and 14M and in metric profiles.

What is the difference between HTD, T, and AT timing belts?

The HTD, T, and AT timing belts are primarily distinguished by their tooth profile and transmission characteristics.

  • HTD (3M, 5M, 8M, 14M): have rounded teeth and are particularly suitable for transmitting high torque.
  • T (T2.5, T5, T10): have trapezoidal teeth and a metric pitch. They are widely used in handling and positioning applications.
  • AT: have an enhanced trapezoidal profile compared to T belts and allow for greater force transmission at the same width.

Note: the belt and the pulley must have the same profile and the same pitch. Different types are therefore not directly interchangeable.

To choose the most suitable belt, it is important to verify the transmission characteristics and compatibility with the pulleys used.

What are the Gates Poly Chain Carbon belts and when are they used?

The Gates Poly Chain Carbon are polyurethane toothed belts with carbon fiber tensile cords, designed to transmit very high torque.

They are used in industrial applications that require robust and efficient drives and can be an alternative to traditional roller chains.

Compared to chains, they offer several advantages:

  • No lubrication is required.
  • They have a very low elongation during operation.
  • They allow the creation of drives suitable for high loads.

Caution: the Gates Poly Chain Carbon require pulleys with a dedicated profile and are not directly interchangeable with standard HTD toothed belts.

On shop.atti.it, ATTI offers over 250 codes from this range, including the Mini Poly Chain version.

Can open timing belts be purchased by the meter?

Yes. ATTI offers open timing belts by the meter in polyurethane, primarily used for linear shafts, conveyor belts, and positioning systems.

The belts can be ordered by the meter, with a minimum quantity of 5 meters.

In these applications, the ends of the belt are generally secured using special locking plates, available for the main pitches of the timing belts.

To identify the most suitable product, it is important to check the profile, pitch, and width of the belt.

Where to buy V-Belts Gates online in Italy?

On shop.atti.it, the e-commerce site of ATTI Srl, you can find V-Belts Gates from the Hi-Power and Delta Classic lines, as well as belts branded ATTI.

The catalog includes V-Belts of various types:

  • Classic sections: Z, A, B, C, D, E.
  • Narrow sections: SPZ, SPA, SPB, SPC.
  • Notched sections: AX, BX, XPZ, XPA, XPB, XPC.

On shop.atti.it, there are over 3,300 items in the V-Belts category, available for online purchase with shipping throughout Italy.

You can consult the available range in the V-Belts category.

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A.T.T.I. Srl - Via f.lli Cervi 3 - 20063 Cernusco sul Naviglio (MI) - IT
P.IVA 05984490150 | Codice SDI: A4707H7 | Rea: MI-1062427 | Capitale Sociale: 100.000,00 €